English
12
Pump Down Operation
In order to protect the environment, be sure to pump down when relocating or disposing of the unit.
1) Remove the valve cap from liquid stop valve and gas stop valve.
2) Carry out forced cooling operation.
3) After 5 to 10 minutes, close the liquid stop valve with a hexagonal
wrench.
4) After 2 to 3 minutes, close the gas stop valve and stop forced cool-
ing operation.
1.
Forced operation
1) Switch off the power.
2) Remove the Service lid (2 screws).
3) Remove the service PC-board switch cover (1 screw).
4) Switch SW5 and SW6 to off.
5) Turn the operation mode switch (SW2) to COOL.
6) Screw the service PC-board switch cover back on (1 screw)-
7) Switch the power on.
8) Push the forced operation switch (SW1) above the service PC-board cover.
■
Start forced colling operation.
To stop forced operation, push the forced operation switch (SW1) again.
WARNING
Do not remove the switch cover unless the power has been turned off. (Risk of electric shock)
Gas stop valve
Close
Hexagonal
wrench
Liquid stop valve
Valve caps
Service PC-board
HEAT
COOL
4
3
2
1
2
1
E
D
C
B
A
A
S501
S2
SW3
SW1
S502
1
2
3
4
5
